test section setup: caps, doors, dampers, and temporary seals sealing, leakage testing & airside verification prepare duct section test caps access doors dampers temporary seal walk the complete test boundary before pressurizing and verify every cap, access door, damper position, temporary seal, support, and test connection is secure. stored pressure can eject caps or debris, damage ductwork, and injure workers. approved leakage-test plan, site safety procedure, test-equipment instructions can we walk this test boundary together before pressure goes on and confirm every opening, cap, damper, and temporary seal?